Casing for boilers



F. RANKIN ET AL CASING FOR BOILERS 3 Sheets-Sheet l Filed June 2, 1948 Om N 0 R. MM w Mmmm-.m Q m NM N mm m HN W @m mm gw@ om 27% w MM H Nm RT .A xm um F FM Y B E: m. w m Nwm l T L m /Mv @a .my O m. m o f l. 1 Q \.Nlm. *19W QW \m.\ wm n N\ m.\ a N @E www jp Nv Nm QWUWJ`W Nm wml N W mm le Nov. 13, 1951 F. RANKIN ETAL 2,575,069

` CASING FOR BOILERS Filed June 2, 1948 I 3 Sheets-Sheet 2 FIG.12

ATTORNEY Nov. 13, 1951 Fild June 2, 1948 F. RANKlN ETAL 2,575,069

CASING FOR BOILERS 3 Sheets-Sheet 3 /2 ATToR/Vfy Patented Nov. 13, 1951 UNITED STATES rATeNT OFFICE CASIN'G'FOR BOILERS' Felix Rankin and Herbert Dannemann, Brooklyn, N. Y.

Application June 2, 1948, Serial No. 30,722

laims i This invention relates. to jackets., enclosures; or casings for boilers, hot water heaters, furnaces; or the like. It is particularly directed to knock down collapsible casings for cylindrical boilers or furnaces made of assembled parts:

Knockdown casings for cylindricalboilers were heretofore constructed of sheetfmeta-l parts rolled into permanent round shape and assembled to. gether. In accordance with the present invention, the casing is made of a plurality of normally flat, resilient metal panels assembled tri-.- gether and flexed around theboiler.

Another object of thisr invention is to provide a Vsubstantially cylindrical casingof-:the ch,arac. ter described comprising a front vpanel and side panels made of normally flat-resilient.sheetmetal stock and removable coupling members coupling* said side panels to opposite side edges of the. front panel, said assembled panels being-adaptaV edto be flexed partly -around a cylindrical boiler, and arear normally flat panel iiexedroundv and having side flanges snapped into-channels at they outer sides of the side panels, so that the assem bled panels will be retained in substantially cy'-vv lindrical condition around the cylindrical boiler.

Yet a further object of `this invention is vto provide a casing for a cylindrical boiler comprising` a front panel, side panels coupled to the side edges of the front panel, `and'said assembled panels being adapted to be iiexed int-o round shape, the outer sides of the side panels being formed with outwardly opening longitudinal channels,` and a rear panel having inwardly extending flanges at the sides thereof adapted to snap into said channels forcompleting the casing.

Still a further object of this invention is to provide a casing of the character described includinga top circular cover which Amay t over overlappingportions'and said parts being formed i with notches at their inner edges, the notches of thev two parts together forming one or more openings through whichpipes orv the like articles on the boiler-may pass.

Yet anfurther object of: this.inventionY is` to. provide a casing of the character; described., made to fit a cylindrical `boiler formed withgan extension, and saidicasing including-a casingpart adapted to nt over-said extension; .and

means for coupling said Qasn'prrtto other panels of the casing. I

Still another object; ofy thisinventlon .ato

provide va boiler casing :comprising Va pair.of5 {zo-extensivepanels having at their adjacent,

edges, turned back flanges; and. a cleat lhavingat opposite longitudinal edges thereof inwardly" turned anges slidably engaging the iiangesoi` said panels for assembling"saidpanels,together;`

Still Vanother object..l of this invention isz-to.

provide a strong, rugged s and durable :casing f cf'A the character describedf. and comprising. panels which may be. shipped nat, and .which may bel: exed aroundthe boiler-at the. place Whereyther casing is assembled Withithe boilenrthe co.nsif;v.-uc tionvbeing such` that there is nalnecessityr forrollingv the panels intoround shape. and thereby-V permittingv shipment ofthe Yentire device-in a' compact package, andl alsofpermittingassembly* of the device around the boiler quickly; andeasilyf,y

the said panels being formedwi-thpre-cut holesand cut-outswherever necessaryxtoaccommodate pipes, gauges, valves, burner Aholes,` Water and steam inlets, drain? pipes-.orfany lother-partsex-` tending fromxthe boiler.; c 1

Yet a further object. of' this invention,,isftoV provide a casing of the character described.: which shall be easy to assemblefrelatively inexpensive. tov manufacture,v and which`l shall"v .yet be practical and eiiicient. toa high; degree infuse,` l

Other objects of this invention will ,part

be "obviousfand in part. hereinafter pointed out.,

The invention accordingly consistsin` theiea-` tures of construction, Vcombinations ofelements.. and arrangement of' parts-which. Will be Vexernf plied in-.the construction-Y hereinafter descr-ibm.;V

and of which the scopeol inventionw-illljbe indieA cated in the following, claims.;

In the accompanying drawings irrwhich isf shown various illustrative embodiments of, this invention',

Fig. 1 is a fronti-viewer threezoi the casing... panels` assembled toeetherfin tandemain dat con-1 dition :g

Fig. 2 is atop plan view. ci lthestructure shown,

in Figi;

Fig. 3` is a top: edgeffvievvof.they basein flat l condition;

Fig. 4- is a iront. view of. 4the f structure f shown Fig. 5 is a top edge view of one of the rear panels;

Fig. 6 is a, front view of the panel shown in Fig. 5;

Figs. 7 and 8 are front views of other rear panels;

Fig. 9 is an enlarged cross-sectional view taken on line 9-7-9 of Figi Fig. 10 is a partial perspective view illustrating the joining of adjacent panels by one of the coupling members or clips;

Fig. 11 is a top plan view of the four panels assembled together and flexed into round shape;

Fig. 12 is a front view of the casing embodying the invention around a boiler;

Fig. 13 is a rear view of a casing embodying the invention around a boiler;

Fig. 14 is a partial perspective view illustrating a modied constructiom.

Fig. 15 is a top plan view of a casing similar to that shown in Fig. 11 and 'illustrating a modiilcation thereof;

Fig. 16 is a top plan view of a casing similar to that shown in Fig. 11 and illustrating a further modification thereof, and

' Fig. 1'7` is a topplan View of a casing illustrating a modified construction. f

Referring now in detail to thedrawing, Il) designates a jacket, casing or housing, embodying the invention, for a boileror furnace II of the cylindrical type. The casing I 0 comprises generally a front panel I2, a pair of side panels I 3 and a plurality of rear panels I4, I5, I6 and I'I, a top cover I8 and a base band I9. All of the parts I2 to I1 and I9 may be made of resilient sheet metal such as aluminum or sheet steel.

The front panel I2 is of rectangular shape and is flat normally. It is formed at the sides thereof with inwardly bent or turned back flanges 3U extending throughout the 'longitudinal extent of the sides of said panel. The panel I2 may be formed with openings 3| and cut-outs 32 and 33, as may be necessary for registry with various type inlets, outlets, cut-outs, holes or fittings on the boiler itself. In other words, one of the openings or cut-outs 3|, 32 or 33 is provided in panel I2 wherever something on the boiler will have to project throughthe panel or where something will have to project through the panel into the furnace. In fact, any of the panels may be formed with pre-cut openings Wherever deemed necessary. 1

The side panels I3 maybe similar but symmetrically disposed. Each of the panels I3 may be formed at its inner side with a bent back flange similar to flange 3D. The flanges 39 and 35 are so located that when the panels are flexed around a furnace, as will appear hereinafter, said flanges will be at the inside of the assembled casing I0. The front panel I2 is assembled with the side panels I3 by means of longitudinal sliding coupling members or clips 36. Each member 36 comprises a central web 31 and inwardly extending flanges 38. The flanges 38 are received between the panels I2, I3 and the flanges 30, 35. Conversely, the flanges 38, 35 are received between the flanges 38 and the webs 31 of members 36. The clips or coupling members 36 may be the full length of the panels I2 and I3. A plurality of tandem coupling members 36 may be supplied for each joint, as shown in Fig. l. One clip may be slidably slipped in from one end, and the other from the other end. Each of the side panels I3 is formed at its outer side edge with an integral U-shaped offset portieri. 4.0,..

Each U-shaped portion 40 comprises a flange portion 4I bent back from the panel I3 and a forwardly bent flange portion 42 extending back from the flange 4I. Between the flanges 42 and 4I is formed a channel 43.

The panels I2 and' I3 are normally flat, but they may be flexed into part-cylindrical shape when assembled with the rear panels I4, I5, I6 and I'I.

Panel I4 may be made of two symmetrical parts 45, 46. The parts 45 and 46 have overlap ping portions 45a, 46a, attached together by screws 47 passing through said overlapping por-I tions. Said parts 45, 46 are formed with aligned notches 48 and 49 together forming a cut-out or opening 50 to fit around a flue pipe extending from the boiler. At the outer side edges of the panels 45 and 46 are flanges 52 and 53 adapted to snap into the channels 43 of the panels I3. The front panel I2 is first assembled with the side panels I3 by means of the coupling members 86 as shown in Figs. 1 and 2. The assembled panels I2 and I3 are then flexed into part cylindrical shape so that the portions 40 extend radially, with the channels 43 opening outwardly. The panels I4, I5, I6 and I'I are then flexed into part cylindrical shape, and the flanges 52, 53 will then extend radially and are snapped into the channels 43. Due to the inherent resiliency of the panels, the casing will hold together when thus assembled. In other words, panel I4 will hold together the ends of the assembled panels I2, I3I It will be noted that the panel I4 extends from the top of the casing down part way. The panelV I5 is the same as the panel I4 except that it in formed with notches 80, 6I, 62 and 63. The notches 60, 6I form a h ole 64, whereas the notches 62, 63 form a hole 65. The panel I5 likewise snaps on to the ends of panels I3, I4 and is disposed just below the panel I4. Panel I6 may be similarly constructed to panel I5 except that it may only have one opening 66 instead of two openings 64, 65. Panel I6 may fit in place just below the panel I5. Panel I'I which extends from the lower end of panel I6 to the lower end of the' casing is made of a single sheet of normally flat resilient sheet metal, and has the ends thereof flanged similarly to flanges 52, 53 for snapping into channels 43 of panels I8. Panel I'I may be formed at its lower end with a cut-out 'I8 to fit an opening in the furnace. The cut-out 10 has side edges 'I I.

Fitted over the top of the casing is the cover I8 which may have a top wall I3 and an annular f skirted flange 14, which fits over the upper edges of panels I2, I3 and I4. The cover I8 aids in keeping the panels in cylindrical shape.

The base band I9 may be made of a pair of normally straight strips 80, 8|. Said strips may have bent back hooks or flanges 82 at their inner ends to receive a short clip or coupling member 83. The coupling member 83 has a back wall or web 84 and inwardly extending flanges 85 engaging the flanges 82. Inl other words, member 83 is similar to the clips 36 except that it is of shorter length.

At the outer ends of the strips 80, 8l are bent. back hooks 86, which may engage the edges IIJ of panel I1 at the cut-out 1D.

In Fig. 14 there is shown a modified construction for use with a cylindrical boiler formed with a box-like projecting panel. In Fig. 14 there is shown a casing Illa, which may be similar to casing I0 except that substituted for one of the rear panels I 4. I5., I6 or Il is a casing member 9u or 'asfrontfwall r9 formedifwith La: rectangular:open--I ingzd'a, The. inner-:edges offthezitop. andvbottoink Walls 9| are arcuate to t the cylindrical;casing1 minutes,.,and in so doing the,'at panels areI merelyexed or sprung into curved shape. The panelsfareheld in such shape .ducato thesassem bly. liti-is. not necessary to roll-any of theffpa'nels into. roundlshape. Furthermoree'the casi-ngtmay be;-very,easiliy disassembledi'should it benecessary.to\putanew insulating blanket on the boiler ciali "anyrepairs are to'b'e made. Theopanels particularboiler. The casing does not-havelto beg'shipped.; in assembled condition or assembled with the' boiler before shipping the boiler. vIn fact, no panelsahavestcibef-shipped in curved shapes. While sheet aluminum has beenicund highly desirable for makingfcasings of .theetype describediherein, sheet steel...andyzfotherexible and z-resilentr'sheet metal may .Ibeffemployedf In Fig. 15 is shown a casing |019 of modified construction embodying the invention. The same comprises a front panel i2 to which is interconnected side panels I3 by means of coupling members or clips 35, as previously described. One or more rear panels comprising a one piece sheet of resilient metal is formed with right angle longitudinal flanges |0|, |02 at the outer side edges thereof. The same may be flexed into round shape and into the channels 43 of side panels |3. The panel or panels |00 may be formed with suitable openings which will llt around pipes or the like extending from the boiler or into the boiler. The lower end of the lowermost panel |00 may be provided with a cut-out such as shown in panel Il, in Fig. 13.

In Fig. 16 is shown a further modiication |0e of the casing embodying the invention. The 'same comprises a one piece rear panel |05 of resilient sheet metal formed with right angle longitudinal flanges |06, 01 on the outer side edges thereof. There is further provided a one piece front panel |00 of resilient sheet metal formed with integral longitudinal U-shaped oiset portions ||0 on the outer side edges thereof. The rear panel may be ilexed into a curved member slightly less than a semi-circle and the front panel may be flexed into a curved member slightly greater than a semi-circle, with its edge portions ||0 receiving the flanges |06, |0'| of panel |05 to form a cylindrical casing. The panels |05 and |08 may be provided with suitable openings to admit pipes and the like extending from or into the boiler which is encased in the casing. The U-shaped portions ||0 and the oilset flanges |06, |01 project radially inwardly of the assembled casing.

In Fig. 17 is shown a further modication |0d of the casing embodying the invention and adapted to be used with boilers having projections extending from front or side portions there- .of. A casing member 00 similar to that shown in Fig. 14 except as hereinafter described is adapted to be used in lieu of selected portions or part of th-Side panels I3. The member 90 includes paremmene;

alici-:sidewallsf92ronesideiwall b'eingformediwtlt af'bentback flange andtheother sidewallwith; as u-i'shap'ed portionn; and; interconnectedrt.- frontnpaneli 2 :by ra,- ycoupling member: 35;; and-itc` thefrearzpa-nel offxthezcasing bytreceivingatheffsideff .If desiredgt. thebmeinlzierA :905. may-1'v replaces part' wallsf; willi" .bea a provided with bent back flanges tormeceivefclipsiScfor assembling ther. same awith theresidespanels.:l

...Itixwillthusxbe 1 seen that there f. is provided a' devices-inf. which@ the.; severalfiobjectszot2 r thisfin-A vention "laurel-acldeyedA and; which is zwell'adapted to meet. therconditionsrof .practical use.-Y

lPls-various.possible embodiments might be made ofithe .abovelzinventiom and as various changes might; be z made in the embodiment above set forthVit4v is` to be understood that all matter here inset forth orshownin theaccompanying drawingsisrtobe interpreted as illustrative and/not inra limiting sense.

Having'thus described our invention, we claim as'finewandA desire tojprotect by Letters Patent .r of the -U'nitedxStatesz 3 i1. sectionalcasingffor aboiler orfthe like.'

comprising-.an annularA wall consisting .of av plu.-Vv

below their felastic limit to form transversely;

curved sections of a casing that is annular in cross-section, the bowed panels having a tendency to return to their completely flattened condition, abutting side edges of said panels being bent to form joint sections disposed in intertting engagement with each other and detachably held together by frictional grip exerted by the tendency of the panels to return to the attened condition.

2. A sectional casing for a boiler or the like, comprising an annular wall consisting of a plurality of vertically extending readily detachable panels formed of resilient sheet metal, said panels being initially flat and being bowed transversely to form transversely curved sections of a casing that is annular in cross-section, the bowed panels having a tendency to return to fiat condition,

and joints for said panels comprising radially' Vintertting ange and channel means at the meeting longitudinal side edges of adjacent panels to detachably hold said panels together, said interfltting means being frictionally clamped by the tendency of the panels to return to a fully attened condition.

3. A sectional casing for a boiler or the like, comprising an annular wall consisting of a plurality of vertically extending readily detachable initially flat panels of resilient sheet metal, said panels being transversel bowed to form curved sections of a casing that is annular in transverse cross-section, said panels having a tendency to return to a completely flattened condition, means to detachably interconnect adjoining end of adjacent bowed panels, said means comprising an inwardly extending, outwardly opening, integral channel at the longitudinal edge of one panel,

and an inwardly extending ange integral with I and extending along the longitudinal edge of the adjacent panel and received within said channel and frictionally gripped therein by the tendency of said panels to return to their normally at condition.

4. A sectional casing for a boiler or the like, comprising an annular wall consisting of a. plurality of vertically extending readily detachable panels formed of resilient sheet metal, said panels being initially flat and being bowed transversely below their elastic limit to form' transversely curved sections of a casing that is annular in cross-section, said panels having a tendency to return to their completely flattened condition, abutting side edges of said panels being bent to form joint sections disposed in interiltting engagement with each other and so held by frictional grip exerted by the tendency ofthe panels to return to the flattened condition, and a cover resting upon end edges of the panels and hav-- ing a depending marginal flange fitting closely about the. annular wall and bracing the wall.

, 5. A casing for a boiler or the like, comprising an annular wall consisting of a plurality of Vertically extending readily detachable panels formed of resilient sheet metal, said panels being initially flat and being bowed transversely below their elastic limit to form transversely curved sections of a casing that is annular in cross-section, the bowed panels having a tendency to return to their completely attened condition, abutting Vside edges of said panels being bent, to form joint sections disposed in intertting engagement with each other and detachably held together by fric'N tional grip exerted by the tendency of the panels to return to the ilattened condition, and a cover resting upon upper edges of the panels and having a depending marginal flange fitting closely said boiler.

FELIX RANKIN. HERBERT DANNEMANN.

REFERENCES CITED The following references are of record. in the file of this patent:

UNITED STATES PATENTS Number Name Date v 256,955 Betts Apr. 25, 1832 962,938 Brown et al June 28,1910

1,233,345 Hake July 17, `1917 1,350,257 Kasbohm Aug. 17, 1920 1,417,617 McNeil May 30. 1922 1,467,675 Killion Sept. 11, 1923 1,553,654 Vrba Sept. 15, 1925 1,673,168 Troutman June 12, 1928 1,882,675 Smith Oct. 18, 1932 1,887,760 Hauser Nov. l5, 1932 2,190,997 Somers Feb. 20, 1940 2,263,098 Mueller Nov. 18, 1941 AFOREIGN PATENTS Number Country I Date 2,437 Great Britain 1913 106,938 Sweden Mar. 23,` 1943 569,897 Great Britain June 13, 1945 

